Improvement in oil-cups



UNITED STATES PATENT OFFICE.

JOHN G. MCBRIDE, OF SARAMENTO, CALIFORNIA.

IMPROVEMENT IN OIL-CUPS.

Specification forming part of Letters Patent N o. 221,929, dated November 25, 1879; application filed August 27, 1819.

To all 'whom it may concern:

Be it known that I, JOHN Gr. MGBRlDE, of the city of Sacramento, State ot' California, have invented a new and useful Improvement in Oil-Oups, of which the following is a specification.

The invention relates to that class of oilcups used for lubricating purposes where a regular tlow of oil is required of any desired quantity; and it consists of an interna-l valve regulated at the top of the oil-cup by means of a nut., provided with extending lugs arranged in a slotted sleeve.

In the accompanying drawings, Figure l is au elevation of an oil-cup embodying my invention. Fig. 2 is a sectional elevation ot' Fig. 1. Fig. 3 is a detail.

The exterior ot' the cup is composed of the bottom B, of which rim Itis made a part; also the threaded shank H, used for screwing the cup to its bearing; also the top T, provided with nut O and glass tube G. The oil is inclosed by the top T, bottom B, and glass tube Gr. The bottom B is provided with a small bored aperturefo, that extends through shank H, through which the oil passes into the bearing. The top ot the aperture 0 is provided with a valve, 11,in the form of an inverted cone, which closes the aperture when forced down, and permits oil to pass through o when the valve e is raised. So by adjusting the valve u up or down any desired quantity of oil can be permitted to tlow into 0.

The valve u is provided with a shank, fr, which extends up through the top T. Around shankris a spiral spring, s, which presses down upon the valve n and up against the top T, thus forcingthe valve v down and closing the aperture o. The top of the valve-shank r is provided with two nuts, Naud C. Nut C is used as a j ain-nut to keep N from turning. The lower nut, N, is provided with two lugs, a a, (see Fig. 3,) and the top T is provided with a sleeve, w, which is provided with four longitudinal slots, consisting of the two opposite slots t t and the two at right angle, in which the lugs a are shown. The two slots in which the arms a rest are made longer or lower down than the other two, so that it lets the nut N slip down with the shank r and valve e until the opening o is closed, as shown in Fig. 2; and the two slots t t are made short, so that when the nut N with the valve u is drawn up, by taking hold of nut O and turning it onequarter the way around, so that the lugs a a will drop in the slots t t, the valve v will be kept up from its seat at o, for the reason that the slots t t are short and will not let thelugs a a and nut N down far enough to cause the valve n to elose the openin g o.

The top of the shank fr is provided with a slot for a screw-driver or other means of turn ing the shank r. so that it can be screwed up or down through the nut N, so that while the lugs a a, are in the short slots t the valve will be opened enough to let through just the amount of oil required; andwhen the lugs a h arel turned so as to be in the long slots, as

shown, the valve will close the openin g 0 and 

